chr14-67541940-C-T

Position:

• chr14-67541940-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_020715.3(PLEKHH1):​c.73C>T​(p.Leu25Phe) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PLEKHH1 NM_020715.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.05

Genes affected

PLEKHH1 (HGNC:17733): (pleckstrin homology, MyTH4 and FERM domain containing H1) Predicted to be located in cytoskeleton. [provided by Alliance of Genome Resources, Apr 2022]

GPHN (HGNC:15465): (gephyrin) This gene encodes a neuronal assembly protein that anchors inhibitory neurotransmitter receptors to the postsynaptic cytoskeleton via high affinity binding to a receptor subunit domain and tubulin dimers. In nonneuronal tissues, the encoded protein is also required for molybdenum cofactor biosynthesis. Mutations in this gene may be associated with the neurological condition hyperplexia and also lead to molybdenum cofactor deficiency. Numerous alternatively spliced transcript variants encoding different isoforms have been described; however, the full-length nature of all transcript variants is not currently known. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PLEKHH1	NM_020715.3	c.73C>T	p.Leu25Phe	missense_variant	2/29	ENST00000329153.10	NP_065766.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PLEKHH1	ENST00000329153.10	c.73C>T	p.Leu25Phe	missense_variant	2/29	1	NM_020715.3	ENSP00000330278.5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 01, 2022

The c.73C>T (p.L25F) alteration is located in exon 2 (coding exon 1) of the PLEKHH1 gene. This alteration results from a C to T substitution at nucleotide position 73, causing the leucine (L) at amino acid position 25 to be replaced by a phenylalanine (F). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.75
BayesDel_addAF	Benign	0.0022	T
BayesDel_noAF	Benign	-0.23
CADD	Pathogenic	28
DANN	Uncertain	1.0
DEOGEN2	Benign	0.034	T
Eigen	Pathogenic	0.79
Eigen_PC	Pathogenic	0.75
FATHMM_MKL	Uncertain	0.87	D
LIST_S2	Uncertain	0.93	D
M_CAP	Benign	0.027	D
MetaRNN	Uncertain	0.59	D
MetaSVM	Benign	-0.67	T
MutationAssessor	Uncertain	2.6	M
PrimateAI	Uncertain	0.64	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.17
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0080	D
Polyphen		1.0	D
Vest4		0.59
MutPred		0.22		Gain of catalytic residue at Q24 (P = 0.0196);
MVP		0.60
MPC		0.80
ClinPred		0.99	D
GERP RS		5.2
Varity_R		0.56
gMVP		0.56

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr14-68008657;